1、===方法1======
persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0"
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence     http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">

    <persistence-unit name="mainPU" transaction-type="RESOURCE_LOCAL">
        
    </persistence-unit>
</persistence>

spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
    http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-4.0.xsd 
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
    ">

    <!-- 载入常用的配置 -->
    <context:property-placeholder location="classpath:jdbc_hibernate.properties,classpath:druid.properties" />
    <!-- 注解扫描所有包 -->
    <!-- <context:annotation-config/> -->
    <context:component-scan base-package="com.spring.*" />

    <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
        
        <!-- 定义实体管理器工厂
         Jpa配置   LocalContainerEntityManagerFactoryBean这个选项Spring扮演了容器的角色。完全掌管JPA -->
         <!--  点我查看 spring生成EntityManagerFactory的三种方式  -->
    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
           <!-- 指定数据源 -->
        <property name="dataSource" ref="dataSource"/>
       <property name="jpaVendorAdapter">  
            <bean  
                class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">  
                <property name="database" value="MYSQL" />  
                <property name="showSql" value="true" />  
                <!-- <property name="generateDdl" value="true" /> -->  
            </bean>  
        </property>  
  
    </bean>
    
    <!-- Jpa 事务管理器  -->
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory"/>
    </bean>
    <!--注解方式事务管理 -->
    <!-- <tx:annotation-driven transaction-manager="transactionManager"/> -->
    <!--统配方式事务管理 -->
    <tx:advice id="txadvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="save" propagation="REQUIRED" />
            <tx:method name="delete*" propagation="REQUIRED" />
            <tx:method name="update*" propagation="REQUIRED" />
            <tx:method name="transfer*" propagation="REQUIRED" />
            <tx:method name="upgrade*" propagation="REQUIRED" />
            <tx:method name="change*" propagation="REQUIRED" />
            <tx:method name="do*" propagation="REQUIRED" />
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut expression="execution(* com.spring.manager.*.*(..))"
            id="txpointcut" />
        <aop:advisor advice-ref="txadvice" pointcut-ref="txpointcut" />
    </aop:config>

    <!-- 事务配置 end -->
    
    <!-- 强制使用cglib代理 -->
    <!--<aop:aspectj-autoproxy proxy-target-class="true" />  -->

</beans>

2、======方法2====
persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0"
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence     http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">

    <persistence-unit name="mainPU" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
            <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
            <property name="hibernate.connection.url" value="jdbc:mysql://127.0.0.1:3306/apartment?useUnicode=true&characterEncoding=UTF-8" />
            <property name="hibernate.connection.username" value="root" />
            <!-- <property name="hibernate.connection.password" value="123456" /> -->
            <property name="hibernate.connection.password" value="123" />
            <!-- <property name="hibernate.connection.password" value="Rootyetao2015" /> -->
            <property name="hibernate.c3p0.max_size" value="100" />
            <property name="hibernate.c3p0.min_size" value="2" />
            <property name="hibernate.c3p0.timeout" value="1200" />         <!-- 获得连接的超时时间,如果超过这个时间,会抛出异常，单位毫秒 -->
            <property name="hibernate.c3p0.max_statements" value="100" />   <!-- 最大的PreparedStatement的数量 -->
            <property name="hibernate.c3p0.idle_test_period" value="60" />  <!-- 每隔60秒检查连接池里的空闲连接 ，单位是秒 -->
            <property name="hibernate.c3p0.acquire_increment" value="5" />  <!-- 当连接池里面的连接用完的时候，C3P0一下获取的新的连接数 -->
            <property name="hibernate.c3p0.validate" value="true" />        <!-- 每次都验证连接是否可用 -->
            <property name="hibernate.c3p0.testConnectionOnCheckout" value="false" />
            <property name="hibernate.cache.use_query_cache" value="10" />
            <property name="hibernate.current_session_context_class" value="thread" />
            <property name="hibernate.show_sql" value="false" />
        </properties>
    </persistence-unit>
</persistence>

spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
    http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-4.0.xsd 
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
    ">

    <!-- 载入常用的配置 -->
    <context:property-placeholder location="classpath:jdbc_hibernate.properties,classpath:druid.properties" />
    <!-- 注解扫描所有包 -->
    <!-- <context:annotation-config/> -->
    <context:component-scan base-package="com.spring.*" />
        
        <!-- 定义实体管理器工厂
         Jpa配置   LocalContainerEntityManagerFactoryBean这个选项Spring扮演了容器的角色。完全掌管JPA -->
         <!--  点我查看 spring生成EntityManagerFactory的三种方式  -->
    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
          <property name="persistenceUnitName" value="mainPU" />
    </bean>
    
    <!-- Jpa 事务管理器  -->
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory"/>
    </bean>
    <!--注解方式事务管理 -->
    <!-- <tx:annotation-driven transaction-manager="transactionManager"/> -->
    <!--统配方式事务管理 -->
    <tx:advice id="txadvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="save" propagation="REQUIRED" />
            <tx:method name="delete*" propagation="REQUIRED" />
            <tx:method name="update*" propagation="REQUIRED" />
            <tx:method name="transfer*" propagation="REQUIRED" />
            <tx:method name="upgrade*" propagation="REQUIRED" />
            <tx:method name="change*" propagation="REQUIRED" />
            <tx:method name="do*" propagation="REQUIRED" />
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <aop:config>
        <aop:pointcut expression="execution(* com.spring.manager.*.*(..))"
            id="txpointcut" />
        <aop:advisor advice-ref="txadvice" pointcut-ref="txpointcut" />
    </aop:config>

    <!-- 事务配置 end -->
    
    <!-- 强制使用cglib代理 -->
    <!--<aop:aspectj-autoproxy proxy-target-class="true" />  -->

</beans>